AT91SAM9263EK support

This patch adds support for the AT91SAM9263 chip and the AT91SAM9263EK
board.

Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/Makefile b/Makefile
index 5e06ff5..65ef6c2 100644
--- a/Makefile
+++ b/Makefile
@@ -2329,6 +2329,9 @@
 at91sam9261ek_config	:	unconfig
 	@$(MKCONFIG) $(@:_config=) arm arm926ejs at91sam9261ek atmel at91sam9
 
+at91sam9263ek_config	:	unconfig
+	@$(MKCONFIG) $(@:_config=) arm arm926ejs at91sam9263ek atmel at91sam9
+
 cmc_pu2_config	:	unconfig
 	@$(MKCONFIG) $(@:_config=) arm arm920t cmc_pu2 NULL at91rm9200